How deep is Long Lake?

Long Lake is more than 88 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 88 foot line, and the lake continues deeper inside it, with 15 depth bands mapped in total.

Where is the deepest part of Long Lake?

The deepest surveyed water on Long Lake sits toward the northwestern corner of the lake, inside the 88 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.

How accurate is this Long Lake depth map?

The contours come from the Michigan DNR Inland Lake Contours survey. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation.

Michigan lake depth maps

Long Lake depth map

Long Lake in Grand Traverse County, Michigan reaches a depth of more than 88 feet at its deepest surveyed contour. The official Michigan survey maps 15 depth bands across 38 contour lines. This free map of Long Lake shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.

Long Lake depth chart: 15 depth bands to 88+ ft

Data: Michigan DNR Inland Lake Contours (public record), retrieved August 2026 · depths change over time · not for navigation

How to fish Long Lake: deep, two-story water

At 88 feet, this is a two-story fishery: warm-water species work the shallows and weed edges while the deep basin can hold cold-water fish below the summer thermocline. In summer, target the transition where the bottom breaks from the shallow shelf toward the basin; fish suspend along that edge at dawn and dusk. The 15 mapped depth bands make it straightforward to find those breaks before you launch.

Ice fishing on Long Lake

On deep water like Long Lake, the winter bite concentrates along the first major drop-off rather than the deepest basin. Use the contours above to find where the shallow shelf breaks toward deep water and set up on that edge; panfish and walleye slide up and down it through the day. Late ice often pushes fish shallower again. Always verify ice thickness locally before walking out, and remember deep lakes freeze later and less evenly than shallow ones.

Long Lake depth map FAQs

How deep is Long Lake?: Long Lake is more than 88 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 88 foot line, and the lake continues deeper inside it, with 15 depth bands mapped in total.
Where is the deepest part of Long Lake?: The deepest surveyed water on Long Lake sits toward the northwestern corner of the lake, inside the 88 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.
How accurate is this Long Lake depth map?: The contours come from the Michigan DNR Inland Lake Contours survey. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation.

Depth maps for lakes near Long Lake

Cedar Hedge Lake depth map · 69 ft max · 4 mi away
Silver Lake depth map · 96+ ft max · 4 mi away
Lake Ann depth map · 75 ft max · 5 mi away
Duck Lake depth map · 98 ft max · 6 mi away
Boardman Lake depth map · 73+ ft max · 7 mi away

Mapped fishing venues near Long Lake

Long Lake in the venue directory covers access and fishing details for this water.

Cedar Hedge Lake · 4 mi away
Silver Lake · 4 mi away
Lake Ann · 5 mi away

Fishing in Michigan needs a state license: Michigan fishing license guide · all Michigan venues